Journal ArticleDOI
Colorimetry of Clays as a Tool to Identify Soil Materials for Earthen Buildings Restoration
Adria Sanchez-Calvillo,Elia Mercedes Alonso-Guzmán,José Luis Ruvalcaba-Sil,Wilfrido Martínez-Molina,Hugo Luis Chávez-García,Juan Alberto Bedolla-Arroyo,Elena Guadalupe Navarro-Mendoza,Victor Hugo Blancas-Herrera,Judith Alejandra Velázquez Perez +8 more
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TLDR
In this paper, after the 2017 Puebla Earthquake, the remainders of the earthen architecture of Jojutla de Juarez were collected to be analyzed.Abstract:
In the restoration field and the cultural heritage, the treatment of colour is very important, being an important factor for the decisions and interventions in historic buildings. However, some of these have not the same recognition and protection by authorities, being really vulnerable, especially against natural phenomena like the earthquakes. After the 2017 Puebla Earthquake, the remainders of the earthen architecture of Jojutla de Juarez were collected to be analysed. Natural clays of the quarries near the town were compared by colorimetry tests with the traditional adobe samples which were collected in the locality. There also were conducted particle size analysis and the Unified Soil Classification System, USCS, to obtain the composition and properties of the soils and the adobe bricks, as well as the additives used, mainly straw as fibre reinforcements of the adobe masonry. One of the factors observed which contributed to change the colorimetric values of the clays was the use of stabilizers like lime, on the other hand, these stabilizers also helped to change the USCS classification of the soils and their cohesive properties.read more
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Characterization of adobe blocks: point-load assessment as a complementary study of damaged buildings and samples
Adria Sanchez-Calvillo,Elia Mercedes Alonso-Guzmán,Wilfrido Martínez-Molina,Marco A. Navarrete-Seras,José Luis Ruvalcaba-Sil,Antonia Navarro-Ezquerra,Alejandro Mitrani +6 more
TL;DR: In this paper, the compressive strength of the pieces was tested by two methods: the traditional compression strength test and the point-load test, in order to obtain the indicative values and the correlation equations between both tests.
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Physical and Mechanical Characterization of Lime Pastes and Mortars for Use in Restoration
Elena Guadalupe Navarro-Mendoza,Elia Mercedes Alonso-Guzmán,Adria Sanchez-Calvillo,Juan Alberto Bedolla-Arroyo,Habid Becerra-Santacruz,Antonia Navarro-Ezquerra,Belén González-Sánchez,Wilfrido Martínez-Molina +7 more
TL;DR: In this paper , the characteristics of lime pastes and mortars were investigated in the traditional way and the new limes that exist in the market, offering suitable options for restoration, for which an integrated methodology was used consisting of physical tests such as surface area, electrical resistivity, pulse velocity, colorimetry, and mechanical tests, giving as a result that traditional slaked lime is more likely to deteriorate than powdered lime, which leads us to conclude that powdered hydrated lime has optimal characteristics for restoration activities.
References
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The effects of the fiber contents on the mechanic properties of the adobes
TL;DR: In this paper, compression and tensile tests were conducted for five different adobe mixtures for uniaxial compressive tests done with natural fiber mixtures and the results obtained from mechanical tests were presented in the form of stress-strain graphs.
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Construcción sismorresistente en tierra: la gran experiencia contemporánea de la Pontificia Universidad Católica del Perú
TL;DR: In this article, the authors describe the evolution of the knowledge generated at the Catholic University of Peru (PUCP) of reinforced earth, a material composed of earth and compatible reinforcements, with which it is possible to build seismic-resistant constructions.
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Color Science in the Examination of Museum Objects
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The Influence of Natural Organic Materials on the Properties of Traditional Lime-Based Mortars
TL;DR: In this paper, the influence of natural organic materials on the properties of traditional mortars was investigated, including color variations (colorimetry), waterproofing behavior (water capillarity test), permeability (water vapor permeability test), mechanical properties (maximum resistance to compression test), mineralogical composition (X-ray diffraction), and optical properties of mortars (transmitted light microscopy, UV fluorescence microscopy), and carbonation using a phenolphthalein indicator, were evaluated after 28 days, 3, 6, and 12 months.
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Vernacular Earthen Buildings from Leiria, Portugal–Material Characterization
João Luís Parracha,José Tarcísio Lima,Maria Teresa Freire,M Ferreira,Paulina Faria,Paulina Faria +5 more
TL;DR: In Portugal, a large number of vernacular earthen buildings present an advanced state of degradation due to their historical, technological, architectonic, cultural and social recognizability as mentioned in this paper.